diff options
Diffstat (limited to 'Source/3rdParty/SDL2/src/audio/nacl/SDL_naclaudio.c')
| -rw-r--r-- | Source/3rdParty/SDL2/src/audio/nacl/SDL_naclaudio.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/Source/3rdParty/SDL2/src/audio/nacl/SDL_naclaudio.c b/Source/3rdParty/SDL2/src/audio/nacl/SDL_naclaudio.c deleted file mode 100644 index 3e3afc0..0000000 --- a/Source/3rdParty/SDL2/src/audio/nacl/SDL_naclaudio.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ - -#include "../../SDL_internal.h" - -#if SDL_AUDIO_DRIVER_NACL - -#include "SDL_naclaudio.h" - -#include "SDL_audio.h" -#include "SDL_mutex.h" -#include "../SDL_audio_c.h" -#include "../SDL_audiodev_c.h" - -#include "ppapi/c/pp_errors.h" -#include "ppapi/c/pp_instance.h" -#include "ppapi_simple/ps.h" -#include "ppapi_simple/ps_interface.h" -#include "ppapi_simple/ps_event.h" - -/* The tag name used by NACL audio */ -#define NACLAUDIO_DRIVER_NAME "nacl" - -#define SAMPLE_FRAME_COUNT 4096 - -/* Audio driver functions */ -static void nacl_audio_callback(void* samples, uint32_t buffer_size, PP_TimeDelta latency, void* data); - -/* FIXME: Make use of latency if needed */ -static void nacl_audio_callback(void* stream, uint32_t buffer_size, PP_TimeDelta latency, void* data) { - const int len = (int) buffer_size; - SDL_AudioDevice* _this = (SDL_AudioDevice*) data; - SDL_AudioCallback callback = _this->callbackspec.callback; - - SDL_LockMutex(private->mutex); /* !!! FIXME: is this mutex necessary? */ - - /* Only do something if audio is enabled */ - if (!SDL_AtomicGet(&_this->enabled) || SDL_AtomicGet(&_this->paused)) { - if (_this->stream) { - SDL_AudioStreamClear(_this->stream); - } - SDL_memset(stream, _this->spec.silence, len); - return; - } - - SDL_assert(_this->spec.size == len); - - if (_this->stream == NULL) { /* no conversion necessary. */ - SDL_LockMutex(_this->mixer_lock); - callback(_this->callbackspec.userdata, stream, len); - SDL_UnlockMutex(_this->mixer_lock); - } else { /* streaming/converting */ - const int stream_len = _this->callbackspec.size; - while (SDL_AudioStreamAvailable(_this->stream) < len) { - callback(_this->callbackspec.userdata, _this->work_buffer, stream_len); - if (SDL_AudioStreamPut(_this->stream, _this->work_buffer, stream_len) == -1) { - SDL_AudioStreamClear(_this->stream); - SDL_AtomicSet(&_this->enabled, 0); - break; - } - } - - const int got = SDL_AudioStreamGet(_this->stream, stream, len); - SDL_assert((got < 0) || (got == len)); - if (got != len) { - SDL_memset(stream, _this->spec.silence, len); - } - } - - SDL_UnlockMutex(private->mutex); -} - -static void NACLAUDIO_CloseDevice(SDL_AudioDevice *device) { - const PPB_Core *core = PSInterfaceCore(); - const PPB_Audio *ppb_audio = PSInterfaceAudio(); - SDL_PrivateAudioData *hidden = (SDL_PrivateAudioData *) device->hidden; - - ppb_audio->StopPlayback(hidden->audio); - SDL_DestroyMutex(hidden->mutex); - core->ReleaseResource(hidden->audio); -} - -static int -NACLAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture) { - PP_Instance instance = PSGetInstanceId(); - const PPB_Audio *ppb_audio = PSInterfaceAudio(); - const PPB_AudioConfig *ppb_audiocfg = PSInterfaceAudioConfig(); - - private = (SDL_PrivateAudioData *) SDL_calloc(1, (sizeof *private)); - if (private == NULL) { - return SDL_OutOfMemory(); - } - - private->mutex = SDL_CreateMutex(); - _this->spec.freq = 44100; - _this->spec.format = AUDIO_S16LSB; - _this->spec.channels = 2; - _this->spec.samples = ppb_audiocfg->RecommendSampleFrameCount( - instance, - PP_AUDIOSAMPLERATE_44100, - SAMPLE_FRAME_COUNT); - - /* Calculate the final parameters for this audio specification */ - SDL_CalculateAudioSpec(&_this->spec); - - private->audio = ppb_audio->Create( - instance, - ppb_audiocfg->CreateStereo16Bit(instance, PP_AUDIOSAMPLERATE_44100, _this->spec.samples), - nacl_audio_callback, - _this); - - /* Start audio playback while we are still on the main thread. */ - ppb_audio->StartPlayback(private->audio); - - return 0; -} - -static int -NACLAUDIO_Init(SDL_AudioDriverImpl * impl) -{ - if (PSGetInstanceId() == 0) { - return 0; - } - - /* Set the function pointers */ - impl->OpenDevice = NACLAUDIO_OpenDevice; - impl->CloseDevice = NACLAUDIO_CloseDevice; - impl->OnlyHasDefaultOutputDevice = 1; - impl->ProvidesOwnCallbackThread = 1; - /* - * impl->WaitDevice = NACLAUDIO_WaitDevice; - * impl->GetDeviceBuf = NACLAUDIO_GetDeviceBuf; - * impl->PlayDevice = NACLAUDIO_PlayDevice; - * impl->Deinitialize = NACLAUDIO_Deinitialize; - */ - - return 1; -} - -AudioBootStrap NACLAUDIO_bootstrap = { - NACLAUDIO_DRIVER_NAME, "SDL NaCl Audio Driver", - NACLAUDIO_Init, 0 -}; - -#endif /* SDL_AUDIO_DRIVER_NACL */ - -/* vi: set ts=4 sw=4 expandtab: */ |